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are you learning? >> wolf, a law enforcement official told me today that authorities are preparing for a long and slow investigation here and it starts with pieces of the explosive devices scattered along an enormous crime scene. even before the dust started to settle, authorities were asking what kind of explosive device created this. the picture of the bombs now starting to emerge is that they were deadly but crude. a federal law enforcement official with knowledge of the boston bomb investigation tells cnn the bombs were hidden in bags inside a metal pressure cooker. a law enforcement source also told cnn that it's likely but not certain that a timing device was used to detonate the bomb. emergency room doctors said they believed the bombs contained bbs and nails intended by the bomber to kill or maim as many people as possible. >> there were a variety of sharp objects that we found in their bodies, probably this bomb had multiple metallic fragments in them and we removed them. >> mike bouchard is a former top official with the bureau of alcohol, tobacco, and firearms. >> it cou
surveillance by law enforcement officers. as you mentioned he was intubated and sedated with serious injuries. as the investigation continues the focus today is on what charges he will face and when. one week after two deadly bombs exploded in downtown boston, killing three and injuring 183 people, the only surviving suspect remains in serious condition at beth israel deaconess medical center. as federal prosecutors prepare to bring charges against him, law enforcement sources say dzhokhar tsarnaev is unable to talk after a gunshot wound to the neck. exactly when he suffered this injury is still unknown. >> this is a very complex investigation, and it's hard to say exactly how he received that injury. there was certainly a shoot-out in watertown. there were explosives thrown. so that's being looked into right now. it's hard to say exactly how it occurred. >> reporter: we're learning more about the tense moments right before tsarnaev's arrest. this aerial video shows infrared images of him hiding out on a boat in the backyard of a home in watertown. according to a law enforcement source close
learned? >> jake, federal law enforcement officials confirmed to cnn, now, that this was -- these were, in fact, pressure cooker explosive devices. it was explained to me that these pressure cooker devices necessarily include a circuit board, a timer, but they would not confirm that they had found pieces of those component pieces of the bombs, the circuit board or the timer. this is sort of unfortunate in a way. you remember we've been talking about the actual construction would help them understand who was likely behind the explosion -- the explosive devices. the problem is, these i'm told component pieces are commonly available. they're easily obtained. the construction, the design of such an explosive device using a pressure cooker is widely disseminated and known. so this won't be the kind of help that the feds were hoping to get from looking at the signature of the bomb. they thought this might help them discern whether it was a foreign or domestic group, a lone wolf, or a group behind it. also, they are talking about trying to quickly release a photo of the device. why? they tell
will release that videotape in a court of law. they've described it in extensive detail. that's going to be powerful, powerful evidence in a potential trial. tom, thanks very much. let's recap quickly the surviving suspect, dzhokhar tsarnaev, now facing federal charges, among them use gd and conspiring to 0 use a weapon of mass destruction rulgting in death. let's bring in our senior legal analyst jeffrey toobin. jeffrey, what happens next? >> what happens next is that the case will be presented to a grand jury. prosecutors will begin presenting evidence, leading to an indictment. i think the process is going to slow down a great deal. remember, this crime was only a week ago. the government is going to have to assemble a lot of scientific evidence trying to tie material that could be connected to the defendant, to the bomb itself. this is complicated stuff. i think it's going to be months in the grand jury until a final indictment is ready to be presented probably. and then at that point the case will be presented to a trial judge, and there will be motions and then a trial. >> he no
to find the person still there? >> well, absolutely. and that's why you've heard federal law enforcement officials say they're looking at planes coming in and out of boston, even as we speak. as the investigation is ongoing. and one of the things we ought to mention is on all of these component parts, investigators will be looking for latent fingerprints. they'll be looking for dna samples. because somebody had to touch it to put it together. so it's likely that they will have left some mark on this that will be distinctive to them. so all of this will come together to try and help them to quickly identify. what juliette says about it being a boston case is absolutely right. we looked at prior terrorism cases, both successful and unsuccessful cases that have been disrupted, and each time you trace back sort of the perimeter you find that devices are put together in close proximity to where the attack is actually launched. so that's -- investigators understand that and will begin to work from the crime scene outward. >> all right, fran townsend, juliette chi up, our thanks to you. >> let'
hill later today, when law enforcement officials brief lawmakers. john? >> all right, barbara starr, thanks so much. barbara starr in washington. i want to bring back fran townsend, cnn analyst, former homeland security adviser to president george w. bush. and fran, i want to get your take here. where do you think the investigation stands right now? we've had these initial criminal complaints given dzhokhar tsarnaev. we've seen sort of the case laid out just a little bit. but how about the investigation itself? what are the next steps? >> well, first of all, we know from investigators that they're cooperating with the russians. i talked to sources, federal sources, and the cooperation between russian authorities and the fbi is quite good. both want to understand what they might have missed, what they should have seen, and what they should have made of it as this case is unfolding. you know, there are questions about the older brother tamerlan's travels to russia, what he did and who he met with. those are the sorts of questions that are following up. in the meantime, here in the uni
that it was from law enforcement officials that it may have been from a failed suicide attempt. have we learned anything new specifically on that? >> reporter: we have spoken to the hospital about that, they will not give us any information. i spoke with a boston police chief yesterday, ed davis, and asked him specifically about that. he said he couldn't comment on it. but it is in his neck. it is keeping him from speaking. we know there was gunfire exchange and flash grenades that went off, which has caused dzhokhar tsarnaev to not be able to hear. he's lost part of his hearing. but he fell six to seven feet from the boat and there was lots of blood. with all the questioning and everything you're talking about going on in the hospital and that he's -- he has this wound, and he is under medication, i asked a former fbi agent who worked with group, i said, what kinds of questions are they asking him right now? he says, i would imagine they're asking him about his brother's trips, about the rhetoric, about the associates, about plans, other devices, ultimate plan, others involved, about his dad,
Search Results 0 to 8 of about 9 (some duplicates have been removed)